[Challenge] Killing the Butcher with drone's poison dart

[Rumon]

Hi, I've completed the Temple Complex - targeting whole mission completion without any alarm challenge. There were challenges to both kill Butcher without alarm and with poison dart. So I flew my drone towards him and threw a dart. It seemed like he just suffocated and died after couple of seconds. However, the challenge didn't popped up as soon as he was killed. So I'm thinking if I did it right or I'm missing something. If anyone knows anything, let us know. Thanks in advance.

[Jessa Doom]

Try the AP/explosive bullets, maybe a bug with darts killing the butcher.

[tankmanwho]

Hi it can be that you set off the alarm before you killed the butcher its happened to me before. it can happen if you kill a guard and then the other guard is alerted, But then you kill him straight away. This is a bug ive had happened to me before were the alarm hasn't been set of, but the game thinks you have and then doesn't give you the challenge.

[Rumon]

Opprinnelig skrevet av tankmanwho:

Hi it can be that you set off the alarm before you killed the butcher its happened to me before. it can happen if you kill a guard and then the other guard is alerted, But then you kill him straight away. This is a bug ive had happened to me before were the alarm hasn't been set of, but the game thinks you have and then doesn't give you the challenge.

Well if I failed, there should be a cross mark beside that challenge. And I got neither check or cross mark on it. So the challenge just went glitched. There are other achievements glitched in my case too: Hoarder (I counted total of 42 collectibles in my collection) and Employee Of The Year (I completed the whole game - now on to 100% completion). Neither of them popped up. Don't know why.